路由（mongos）：1個(gè)
分片副本集（mongod）：3個(gè)
配置集：3個(gè)
配置集配置文件
dbpath=/home/mongo/config/data/
logpath=/home/mongo/config/log/config.log
logappend=true
port=21000
fork=true
configsvr=true
路由配置文件
logpath=/home/mongo/mongos/log/mongos.log
logappend=true
port=20000
fork=true
configdb=192.168.46.251:21000,192.168.46.142:21000,192.168.46.220:21000
副本集配置文件
dbpath=/home/mongo/shard1/data
logpath=/home/mongo/shard1/log/shard1.log
logappend=true
port=22001
fork=true
replSet=shard1ReplSet
shardsvr=true
登陸任一臺(tái)配置集mongo，初始化配置集
rs.initiate({_id:"cfgReplSet",configsvr:true,members:[{_id:0,host:"192.168.46.251:21000"},{_id:1,host:"192.168.46.142:21000"},{_id:2,host:"192.168.46.220:21000"}]})
登陸任一臺(tái)副本集mongo，初始化副本集
use admin
rs.initiate({_id:"shard1ReplSet",members:[{_id:0,host:"192.168.46.251:22001"},{_id:1,host:"192.168.46.142:22001",arbiterOnly:true},{_id:2,host:"192.168.46.220:22001"}]})
登陸mongo路由，加入副本集
use admin
db.runCommand({addshard : "shard1ReplSet/192.168.46.251:22001,192.168.46.142:22001,192.168.46.220:22001"});
問(wèn)題：
- 啟用分片跟不啟用分片的庫(kù)有什么區(qū)別？
- 分片與單機(jī)在存儲(chǔ)結(jié)果上有什么區(qū)別？
